CVE-2019-9900

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

3.73% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 89.3% of scored records. A rank, not a probability.

NVD base score

8.3 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2019-04-25 14:55Z7 YR AGO

Last updated

2024-08-04 22:01Z2 YR AGO

Reserved

2019-03-21

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Medium (CVSS 6.5)

CNA CVSS vector

CVSS:3.0/AC:H/AV:N/A:L/C:L/I:L/PR:N/S:C/UI:N

Weaknesses

• CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')Class
• CWE-20Improper Input ValidationClass

Data version

5.1

Document digest

797d2a9a7302eda091af71bc81e076e424237475eb1561bd4d5a7ae925798c3b

• access.redhat.comRHSA-2019:0741https://access.redhat.com/errata/RHSA-2019:0741vendor-advisoryx_refsource_REDHAT
• www.envoyproxy.iohttps://www.envoyproxy.io/docs/envoy/v1.9.1/intro/version_historyx_refsource_CONFIRM
• github.comhttps://github.com/envoyproxy/envoy/issues/6434x_refsource_CONFIRM
• groups.google.comhttps://groups.google.com/forum/#%21topic/envoy-announce/VoHfnDqZiAMx_refsource_CONFIRM
• github.comhttps://github.com/envoyproxy/envoy/security/advisories/GHSA-x74r-f4mw-c32hx_refsource_CONFIRM